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ONE OF SEVEN WAYS OF SEEING

Mental Models

Build a toolkit for understanding how the world works.

2,141 ideas to exploreArranged from A to Z
Mental Modelsintermediate

On connectedness

Connectedness in organizations encompasses formal structures, temporary emergency response structures, and informal networks. Recognizing these forms helps risk practitioners orient attention to threats and opportunities.

psychology · sociology↗
Mental Modelsintermediate

On Identity

A shared identity as a system steward asks people to notice risks and connections beyond their formal roles. The proposal is to make risk discussion part of work across departments, rather than leaving it entirely to designated risk managers.

psychology · sociology↗
Mental Modelsintermediate

On Metaphor

An organizational metaphor directs attention toward some features and away from others. A machine metaphor emphasizes control and repeatability; an ecosystem metaphor emphasizes interdependence and adaptation. Cynefin invites us to examine which assumptions fit the situation.

philosophy · psychology↗
Mental Modelsintermediate

On Pace Fallacy

The on-pace fallacy treats an early performance rate as a reliable forecast of a full period. It overlooks the selection of unusually strong starts, random variation, and other reasons the rate may change.

sports · statistics↗
Mental Modelsintermediate

On Suckers and Nonsuckers

Taleb contrasts the fictional characters Fat Tony and Nero, who both bet against financial fragility. Tony values instinct and tangible results; Nero connects the bet to intellectual traditions and believes in warning those at risk. Their disagreement concerns both how to recognize fragility and what responsibilities come with profiting from it.

philosophy · economics↗
Mental Modelsintermediate

On the Irreversibility of Broken Packages

Fragility is path-dependent, meaning that damage (like a broken package) is irreversible and not automatically fixable when conditions improve. Therefore, reducing exposure to downside risk must take precedence over seeking upside gains, as survival is logically prior to success.

science · economics↗
Mental Modelsintermediate

On the Measurability of (Some) Things

Taleb argues that comparing how structures respond to a specified shock can be more reliable than forecasting rare shocks. His distinction shifts attention from estimating an event’s probability to examining vulnerability to it.

philosophy · science↗
Mental Modelsintermediate

One Attack Only

A warrior should aim to win with a single decisive strike, achieved through dedicated practice that reveals the essence of the art and fosters responsibility.

martial arts · philosophy↗
Mental Modelsintermediate

One Way—Two Swords

A mental model from warrior philosophy advocating the use of both long and short swords in combat, emphasizing that understanding the nature of each weapon and combining them yields greater strategic advantage, as encapsulated by the principle 'one thing does one thing, two things do four things.'

philosophy · business↗
Mental Modelsintermediate

Oneness in Combat

In combat, one should not distinguish between inner and outer attitudes; instead, focus solely on defeating the enemy and perfecting technique. This oneness of purpose and action leads to effective performance.

business · military↗
Mental Modelsintermediate

Only Dead Fish Go with the Flow

Erikson’s Red pattern emphasizes decisive action and persistence when others hesitate. His apartment-building story illustrates that style’s ability to confront an unresponsive provider, while the prompts ask where the same approach might backfire.

psychology · sociology↗
Mental Modelsintermediate

Only One Book

Taleb posits that his works form a single coherent corpus, *Incerto*, with each book as a non-overlapping chapter focused on decision-making under uncertainty, randomness, and opacity.

science · economics↗
Mental Modelsintermediate

Opacity

Randomness is not an intrinsic property but a result of incomplete information. What appears random may be deterministic yet opaque to the observer, making the distinction between true randomness and deterministic chaos practically irrelevant.

science · philosophy↗
Mental Modelsintermediate

Open and Closed Systems

This management account contrasts relatively closed systems, whose boundaries support control, with open systems that exchange influences with a wider environment. It also emphasizes overlap between systems approaches and complexity theory.

management · engineering↗
Mental Modelsintermediate

Open Society

Taleb connects Popper’s open society with institutions and habits that allow criticism and revision. He extends the idea to trading: when outcomes are uncertain, a belief needs room to be challenged.

politics · science↗

Opportunity Cost

Opportunity cost is the value of the next best alternative foregone when making a choice, highlighting that every decision involves trade-offs. The concept is encapsulated by the phrase 'there is no such thing as a free lunch.'

business · economics↗
Mental Modelsintermediate

Opportunity Costs

Every decision involves trade-offs; opportunity costs are the hidden benefits you forgo when choosing one option over another. By considering what you give up through the 3-Lens Principle (compared with what? and then what? at the expense of what?), you make more informed choices.

economics · business↗
Mental Modelsintermediate

Optimization

Optimization means choosing how to use limited resources to meet an objective under constraints. The best choice depends on what is being valued, which options are available, and how conditions may change.

science · economics↗
Mental Modelsintermediate

Option = Asymmetry + Rationality

An option combines an asymmetry (upside vs. downside) with the rationality to select beneficial outcomes, enabling antifragile systems to thrive through trial and error. Humans often fail to recognize such options outside finance due to domain dependence.

science · business↗
Mental Modelsintermediate

Option and Asymmetry

Optionality can offer a favorable asymmetry: a limited cost when an experiment fails and a larger payoff when it succeeds. Taleb emphasizes obtaining that exposure cheaply; the outcome also depends on how often gains occur and whether they cover losses and costs.

technology · science↗
Mental Modelsintermediate

Optionality: The Hidden Driver of Discovery

Many discoveries and innovations arise not from intelligence or planning but from optionality—the ability to take the upside without the downside. This concept, central to antifragility, shows that trial and error is effective only when combined with optionality, allowing us to exploit randomness rather than be harmed by it.

technology · philosophy↗

Options, Antifragility, and Social Fairness

Taleb argues that executive stock options can let managers capture gains while shifting losses to shareholders or taxpayers. He criticizes this asymmetry as a transfer of benefits from savers to managers and argues for compensation that includes downside exposure.

psychology · finance↗
Mental Modelsintermediate

Organisational Change Capacity

Organisations often initiate multiple change programmes simultaneously, underestimating the cumulative burden on staff and operations. The illusion of progress from reorganising can hide confusion, inefficiency, and demoralisation, leading to setbacks in business-as-usual and project delivery.

business · psychology↗
Mental Modelsintermediate

Organisational Politics

Organisational politics refers to the strategies and tactics involving influence and power that people use to achieve favourable outcomes for the organisation and themselves. It is inevitable and can be used for both personal gain and organisational good.

management · politics↗
Mental Modelsintermediate

Organizational Culture

Organizational Culture refers to the shared norms, values, and behaviors that distinguish an organization. It is often shaped by founders and leaders, communicated both explicitly and tacitly, and serves to reduce ambiguity.

psychology · sociology↗
Mental Modelsintermediate

Organizational Culture and Dynamics

Organizational norms and structures shape who makes decisions, which evidence they use and how they learn. These conditions can support or obstruct the Empirical & Experiential Evidence (3E) framework.

psychology · sociology↗
Mental Modelsintermediate

Organizational Design Principles

Good design in organizations must balance context, application, and controls to avoid over-engineering while ensuring sufficient structure. It involves considering human factors and coordinating policies to reduce burden.

management · business↗
Mental Modelsintermediate

Organizational Learning

Organizational learning is a socio-cognitive process where groups of individuals within an organization acquire, preserve, and apply knowledge, shaped by culture, strategy, structure, and environment. It encompasses lower-level learning (behavior-outcome associations) and higher-level learning (rules and norms), and can be categorized into adaptive, generative, and transformative modalities.

education · psychology↗
Mental Modelsintermediate

Organizational Structure

Organizational structure is the hierarchical arrangement of authority, communications, rights, and duties that determines how roles, power, and responsibilities are assigned, controlled, and coordinated. It includes mature types (functional, divisional, matrix) and emergent types (flatarchy, holacracy) that emphasize adaptability and fluidity in response to environmental turbulence.

sociology · business↗
Mental Modelsintermediate

Organizations as Living Systems

Senge combines engineering approaches to systems, such as simulation and systems archetypes, with a view of organizations as living systems capable of learning. The two perspectives address interdependence and the conditions under which people adapt.

science · business↗
Mental Modelsintermediate

Original Intentionality

Original intentionality is the idea that human thoughts and beliefs have intrinsic meaning, while artifacts like books and computers have intentionality only derived from human interpretation.

philosophy · psychology↗

Original versus Derived Intentionality

Dennett challenges a sharp divide between the intentionality of minds and that of artifacts—their capacity to be about something. Through a coin detector, Twin Earth, and a giant robot, he argues that meaning depends on function, history, and environment, including evolutionary history. On his account, a thinker’s confidence does not always settle what a thought refers to.

cognitive science · philosophy↗
Mental Modelsintermediate

Our bets are only as good as our beliefs

Duke treats decisions as bets informed by beliefs about the world. Checking and updating those beliefs gives choices a better foundation, even though an informed choice can still have an unlucky outcome.

sociology · business↗
Mental Modelsintermediate

Outcomes are feedback

Outcomes provide feedback on our decisions, but interpreting them requires distinguishing between skill and luck to effectively learn and update our beliefs.

science · business↗
Mental Modelsintermediate

Outside View (Base Rate Neglect)

The outside view starts with outcomes from comparable cases, such as the time similar projects took to finish. It gives a check on the inside view: the plans, impressions, and details that make our own situation feel different.

business · economics↗
Mental Modelsintermediate

Outside View (Base Rates)

The outside view is a decision-making strategy that prioritizes statistical base rates and objective data over personal impressions and anecdotal experiences. It encourages humility by acknowledging that others in similar situations have faced comparable odds, rather than assuming one's own circumstances are unique.

medicine · decision science↗
Mental Modelsintermediate

Overarching Objectives (e.g. Compliance)

Overarching objectives like safety and compliance are deceptively difficult to achieve. They require constant vigilance, attention to small details, and robust communication. Other priorities, assumptions of common sense, and insufficient early-warning mechanisms often undermine them.

law · business↗
Mental Modelsintermediate

Overcoming the Basic Diseases of the Hierarchy

Senge describes how Hanover used openness, merit, and action-science tools to address bureaucratic politics and defensive behavior. The aim was to make assumptions discussable and help managers examine how their own reasoning contributed to conflict.

education · business↗
Mental Modelsintermediate

Overcompensation / Inverse Hormesis

Taleb argues that a manageable challenge can sometimes improve performance, while too little challenge can reduce engagement. He illustrates the idea with horse racing, busy workers, lectures and background noise.

business · education↗
Mental Modelsintermediate

Overfitting

Overfitting is when a model becomes too complex and fits the noise in the data rather than the underlying pattern, leading to poor predictions. It illustrates the danger of considering too many factors or optimizing for proxy metrics, and it can be mitigated by techniques like regularization, cross-validation, and early stopping.

technology · science↗
Mental Modelsintermediate

Overgeneralization

Overgeneralization draws a broad conclusion from limited or unrepresentative evidence. The example infers a change in all young men from the appearance of a subset.

education · sociology↗
Mental Modelsintermediate

Overview Effect

The overview effect describes a shift toward concern for humanity as a whole reported by astronauts viewing Earth from space. Grant connects it with shared-identity experiments, while noting that a successful intervention in an emergency did not carry over to everyday rivalry in another study.

sociology · psychology↗
Mental Modelsintermediate

Pain, Chemicals and Diseases

Physical or mental pain, chemical influences (drugs, alcohol, stimulants), and illnesses can impair clear thinking and decision-making by causing fear, anger, stress, and sensory distortion.

medicine · psychology↗
Mental Modelsintermediate

Pareto Efficiency

An allocation is Pareto efficient when no feasible change can make someone better off without making someone else worse off. The criterion identifies remaining opportunities for mutually beneficial change; it does not determine whether the distribution is fair or everyone’s needs are met.

economics · business↗

Pareto Principle

The Pareto Principle uses an 80%–20% split to illustrate how a minority of inputs can account for most outputs. It is a prompt to look for uneven contributions and measure them, rather than assume every input matters equally.

education · sociology↗

Parkinson's Law

Parkinson’s Law observes that work expands to fill the time available. The source pairs it with observations about spending rising with income and growth bringing maintenance costs, using them as prompts to examine time and resource allocation.

business · productivity↗
Mental Modelsintermediate

Partial Information Heuristic

People often make judgments and interpretations based on incomplete information, filling in gaps with assumptions that may be incorrect, leading to biased decisions and misunderstandings.

education · psychology↗

Partition Model

The decision variable partition model describes confidence judgment as a process of partitioning an internal feeling of confidence into categories. It successfully fits calibration curves but requires many parameters and is agnostic about the underlying determinants of confidence.

statistics · psychology↗
Mental Modelsintermediate

Path Dependence

Path dependence means that an outcome depends on the sequence of events that led to it. Early adoption, switching costs and network effects can help a technology remain dominant even when alternatives are available.

technology · economics↗
Mental Modelsintermediate

Pattern Noise

Pattern noise is variation in how judges respond to particular cases, beyond differences in how strict or lenient they are overall. It includes stable patterns, such as different weights placed on evidence, and occasion noise caused by temporary influences.

business · statistics↗
Mental Modelsintermediate

Pattern Noise and the Ambiguity of Scales

Pattern noise arises from multiple, conflicting cues in complex judgment problems, leading to variability in judgments. Ambiguous scales amplify this noise, and subjective confidence often does not guarantee accuracy.

education · law↗

Pearls to Swine

Taleb uses Mandelbrot’s reception by economists to argue that established methods can crowd out useful alternatives. He favors fractal models for making large events conceivable, while acknowledging that they do not make those events precisely predictable.

economics · science↗
Mental Modelsintermediate

Peer Cruelty

Work in research, art, and other fields can produce long stretches without visible results. Taleb describes the demoralizing comparisons that arise when family, peers, or investors expect steady progress, and the difficulty of persisting without knowing whether a breakthrough will come.

psychology · sociology↗
Mental Modelsintermediate

Peer Review

In peer review, specialists assess a submitted paper’s methods, evidence and conclusions before publication. Reviewers may recommend rejection, acceptance or revision; the process offers scrutiny, but publication is not a guarantee that a study is correct.

academia · science↗